
// This is the command sequence that rotates the ILI9341 driver coordinate frame

rotation = m % 8; // Limit the range of values to 0-7

writecommand(TFT_MADCTL);
switch (rotation) {
case 0:
    #ifdef M5STACK
    writedata(TFT_MAD_MY | TFT_MAD_MV | TFT_MAD_COLOR_ORDER);
    #else
    writedata(TFT_MAD_MX | TFT_MAD_COLOR_ORDER);
    #endif
    _width  = _init_width;
    _height = _init_height;
    break;
case 1:
    #ifdef M5STACK
    writedata(TFT_MAD_COLOR_ORDER);
    #else
    writedata(TFT_MAD_MV | TFT_MAD_COLOR_ORDER);
    #endif
    _width  = _init_height;
    _height = _init_width;
    break;
case 2:
    #ifdef M5STACK
    writedata(TFT_MAD_MV | TFT_MAD_MX | TFT_MAD_COLOR_ORDER);
    #else
    writedata(TFT_MAD_MY | TFT_MAD_COLOR_ORDER);
    #endif
    _width  = _init_width;
    _height = _init_height;
    break;
case 3:
    #ifdef M5STACK
    writedata(TFT_MAD_MX | TFT_MAD_MY | TFT_MAD_COLOR_ORDER);
    #else
    writedata(TFT_MAD_MX | TFT_MAD_MY | TFT_MAD_MV | TFT_MAD_COLOR_ORDER);
    #endif
    _width  = _init_height;
    _height = _init_width;
    break;
    // These next rotations are for bottom up BMP drawing
case 4:
    #ifdef M5STACK
    writedata(TFT_MAD_MX | TFT_MAD_MY | TFT_MAD_MV | TFT_MAD_COLOR_ORDER);
    #else
    writedata(TFT_MAD_MX | TFT_MAD_MY | TFT_MAD_COLOR_ORDER);
    #endif
    _width  = _init_width;
    _height = _init_height;
    break;
case 5:
    #ifdef M5STACK
    writedata(TFT_MAD_MY | TFT_MAD_COLOR_ORDER);
    #else
    writedata(TFT_MAD_MV | TFT_MAD_MX | TFT_MAD_COLOR_ORDER);
    #endif
    _width  = _init_height;
    _height = _init_width;
    break;
case 6:
    #ifdef M5STACK
    writedata(TFT_MAD_MV | TFT_MAD_COLOR_ORDER);
    #else
    writedata(TFT_MAD_COLOR_ORDER);
    #endif
    _width  = _init_width;
    _height = _init_height;
    break;
case 7:
    #ifdef M5STACK
    writedata(TFT_MAD_MX | TFT_MAD_COLOR_ORDER);
    #else
    writedata(TFT_MAD_MY | TFT_MAD_MV | TFT_MAD_COLOR_ORDER);
    #endif
    _width  = _init_height;
    _height = _init_width;
    break;

}
